
| Suppliers to the Subsurface Utility Engineering Community |

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The LD-15’s sensitivity and frequency range are optimized for effective
water leak “surveying” at hydrants, meters, and valves. When a water
distribution system suffers high “unaccounted for water loss,” then
a leak “survey” with acoustic listening devices or other tools is
often recommended. The LD-15’s high sensitivity sensor with
Neodymium magnet (extra strong) and superior audio quality allow the
user to hear the smallest leaks possible.

The sensor and cable connection are completely sealed and waterproof (submersible). The amplifier has superior audio quality (very low distortion and superior signal-to-noise ratio) and large meter display.
Press the Mute Switch to hear sounds when you are ready. “Survey” for water leaks by listening at hydrants and valves with the sensor and magnet. Survey at water meters with a Long Contact Rod (optional). “Pinpoint” water leaks in pipes under asphalt or concrete with the base plate attached to the sensor and magnet. Use the High filter range for water leak surveying. Use the Low filter range for water leak pinpointing. High frequency leak sounds travel on the pipes, but only low frequencies pass through the soil.
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